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@article{DAN_1988_299_1_a8, author = {L\^e H\^ong V\^an and A. T. Fomenko}, title = {Lagrangian manifolds and the {Maslov} index in the theory of minimal}, journal = {Doklady Akademii Nauk}, pages = {42--45}, publisher = {mathdoc}, volume = {299}, number = {1}, year = {1988}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1988_299_1_a8/} }
Lê Hông Vân; A. T. Fomenko. Lagrangian manifolds and the Maslov index in the theory of minimal. Doklady Akademii Nauk, Tome 299 (1988) no. 1, pp. 42-45. http://geodesic.mathdoc.fr/item/DAN_1988_299_1_a8/